Development of a new lime-based mix to reduce phosphorus loss from agricultural fields

该项目将是麦吉尔大学和Graymont之间的密切合作研究开发，Graymont是北美第二大石灰和石灰产品供应商。该合作项目的主要目标是开发一种新的石灰基混合物，并提出一种应用协议，以减少农田通过淋溶和地表径流造成的磷流失。通过拟议的研究，将开发一种环保方法来最大限度地减少磷污染，从而使环境和公司受益。目前，在魁北克湖泊富营养化现象的增加主要是与磷的损失，由于施肥到耕地和年平均磷浓度的报告是两倍以上的魁北克水质标准。石灰具有减少磷流失的潜力，因为它的应用导致更好的土壤结构。这个项目对加拿大的环境非常有利。迄今为止，在这一领域进行了有限的研究，我们致力于找到最佳的产品组合和应用条件。这项研究的结果将有助于Graymont开发一种改性石灰，可用于农田，以减少磷流失和富营养化，并利用其副产品减少环境问题。同时，随着产品的发展，用户友好的模型沿着发展，将促进客户对产品的应用。这项研究将在麦吉尔麦克唐纳校园进行，并将使用不同的实验设置模拟地表和地下径流，无论是在小规模和大规模。我们的研究团队由齐志明教授，一名全日制博士生Faezeh Eslamian女士和四名本科生组成。

This project will be a close collaborative research development between McGill University and Graymont which is North America's second largest supplier of lime and lime-based products. The main goal of this collaborative project is to develop a new lime-based mix with a proposed application protocol to reduce phosphorus loss through leaching and surface runoff from agricultural fields. With the proposed study, an environmentally friendly approach will be developed to minimize P-pollution which will subsequently benefit both the environment and the company. Currently, the increased eutrophication phenomenon in Quebec Lakes is majorly associated with P losses due to the application of manure to cultivated croplands and the annual average P concentration was reported two times higher than the Quebec water quality standard. Lime has shown promising potential to reduce P loss as its application leads to a better soil structure. This project is very environmentally beneficial to Canada. To date, limited research has been carried out in this area and we attend to find the optimum product mix and conditions for its application. The findings from this research will help Graymont develop a modified lime that could be applied to croplands to reduce P loss and eutrophication as well as using their by-products for reducing an environmental issue. Also, the development of user-friendly model along with the product, will facilitate the application of the product for the customers. This research will be conducted at McGill Macdonald campus and will use different experiment settings simulating surface and subsurface runoff, both on small and large scales. Our research group consists of one professor Dr. Zhiming Qi, one full-time PhD student Ms. Faezeh Eslamian, and four undergraduate students.